the 2 stroke Detroits have been around since the 30's.
They helped us win 2 world wars,amazing engines.
They came in 2 cylinder to 16 cylinder,and maybe bigger.

The largest Detroit Diesels built were the 16V-149 Series. That is a V16 at 149 cubic inches per cylinder. The next jump up under the old General Motors umbrella of that time were the Electro Motive Diesel engines. Those engines, also two stroke design, were the 645 and now 710 series. That is 645 cubic inches and 710 cubic inches per cylinder. EMD engines are commonly used in EMDiesel Locomotives. Formerly a part of General Motors who sold out to Ahlstom of Canada who sold out to a holding company. The largest EMDiesels are up to V20 configurations.

Their was a 2-71 on you tube on a new genset always heard they were hard to start this one started rite up tried to buy one no need for it just wanted it 353 were the first motors I ever rebuilt they were simple little men after u figured out how to run the rack

10 or 12 years ago I bought 2 -15 kW gen sets with 2-71 engines they were out of refer rail cars. I converted them from 3 phase to single phase we used them to power construction sites. They had the cutest little blowers